Machine for uniting soles and uppers of boots or shoes



(No Model.) ZSheets-Sheet 1. S. W. ROBINSON & S. P. WATT. MACHINE FOR UNITING SOLE-S AND UPPERS OF BOOTS 0R SHOES.

No; 410,927. Patented Sept. 10, 1889.

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S. W. ROBINSON & S. P. WATT.

MACHINE FOR UNITING sows AND UPPERS OF BOOTS OR SHOES.

No. 410,927. Patented Sept. 10, 1889.

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A T TOR/V E Y N. PETERS. FlwlmLlmagraphw, Washington. DC.

UNITED STATES PATENT OFFICE.

STILLMAN W. ROBINSON AND SERN P. WVATT, OF COLUMBUS, OHIO, ASSIGNORS TO THE VIBE GRIP FASTENING COMPANY, OF BOSTON, MASSACHUSETTS.

MACHINE FOR UNITING SOLES AND UPPERS OF BOOTS R SHOES.

SPECIFICATION forming part of Letters Patent No. 410,927, dated September 10, 1889.

Serial No. 289,217. (No model.)

To all whom it may concern;

Be it known that we, STILLMAN W. ROBIN- SON and SERN P. WATT, citizens of the United States,residin g at Columbus, in the county of Franklin and State of Ohio, have invented a certain new and useful Improvement in Machines for Uniting the Soles and Uppers of Boots or Shoes, of which the following is a Y specification.

This invention consists of an attachment for the machine made subject of Letters Patent No. 325,274, heretofore issued to me. In the patent above referred to the object accomplished was the production of nails from a continuous wire, driving the same into the leather, and giving a partial turn to the nail after its insertion for the purpose of uniting the soles and uppers of boots or shoes.

The objects of our present invention are to displace the grip-action mechanism of the above machine and substitute therefor a gripaction attachment by means of which one end of a wire may be driven into the heel a short distance and cut off, as described in said former patent, without giving the nail the partial rotation; to operate said attachment by the same means described in said former patent for the operation of the gripping and driving mechanism, and bymeans of said attachment to effect the slugging or ornamentation of the surfaces of boot and shoe heels by nails formed from a continuous wire. These objects we accomplish in the manner illustrated in the accompanying drawings, in which- Figure 1 is a side elevation of our attachment. Fig. 2 is a vertical longitudinal section taken through the center thereof. Fig. 3 is a transverse section taken on line 00 0c of Fig. 1. Fig. 4 is a similar sectional view taken on line y y of Fig. 1. Fig. 5 is the side elevation of the spindle-piece. Fig. 6 is a plan view of the same. Fig. 7 is a vertical longitudinal section of said spindle-piece. Fig. 8 is a transverse section of the same, taken on line z z of Fig. 7. Fig. 9 is a view, partly in section and partly in elevation, of the spindlecoupling. Fig. 10 is a plan View of said coupling. Fig. 11 is a sectional view of a ring substituted for the tappet-rin g in the patent referred to. Fig. 12 is a plan view of the latter. Fig. 13 is a view, partly in section and partly in elevation, of the grip-ring. is a similar view of the thread-ring. Fig. 15 is a plan view of the latter. Fig. 16 is aview in perspective of one of the gripper-carriers. Fig. 17 is a perspective view of one of the upper-grippers. Fig. 18 is a perspective view of one of the throat-pieces. Fig. 19 shows a bottom view of a shoe-heel as it appears after slugging. Fig. 20 is a sectional view of a portion of the same, taken on line o c. Fig. 21 is a sectional view of one of the nails shown in Fig. 20. Fig. 22 is aview in perspective of the nail shown in Figs. 20 and 21, and Fig. 23 is a perspective view of a portion of the wire used. 4

Similar letters refer to similar parts throughout the several views.

A represents a cylindrical spindle-piece provided near its upper end with a transverse mortise a and having a central socket (0', extending from its lower end to a point slightly beneath the mortise a. Formed in opposite sides of the spindle-piece are vertical slots (0 of a depth sufficient to communicate with the internal socket a. Formed in the center of the top of the spindle-piece is a vertical wire-ho1ea communicating with the mortise a, and vertically below said hole a is a similar wire-hole a, connecting the mortise and socket. The lower end of the spindle-piece is made slightly tapering, as shown, and has projecting downwardly therefrom on opposite sides of its center pins 1) b.

B B represent two oblong gripping-pieces located vertically within the mortise aof the extension-piece, one on each side of the center of the latter. The inner faces of these gripping-pieces are adapted to be made to bear one against the other, and each of said adjoining faces is provided at the center of its width with a vertical row of concaved teeth'and notches, thus forming a small vertical opening between said gripping-pieces.

Bearing between the outer sides of the gripping-pieces B and the walls of the mortise a and between the flanges upon the ends of said gripping-pieces are metal spring-strips b, which by their tension 'are adapted to press the two faces of the grippers against each other.

C 0 represent gripper-carriers consisting of two oblong blocks of such size as to fit and Fig. 14

slide within the slots a of the spindle-piece, their outer convex faces being flush with the outer surface of said spindle-piece. Each of the gripper-carriers has projecting outwardly from its outer face at or near the center of its length a lug or tooth c, and about midway between said tooth and the lower end of the block is formed a notch 0 I) represents a coupling-piece consisting of a metallic disk having an -H-shaped projection (Z on its upper side and having on oppo' site sides two downward]y-extending prongs d, curved to form segments of the tube, as shown in Figs. 9 and 10 of the drawings. A central vertical wire-hole d is made to pass through the upper end of the coupling. The coupling-piece thus formed is made to, fit loosely over the upper end of the spindlepiece, and has its prongs extending downward 011 opposite sides of said spindle-piece.

E represents a metallic thread-ring having screw-threads upon its outer-surface and having projecting upwardly from its inner surface oppositely-located prongs 6, similar in form to the prongs (Z of the coupling D. The lower end of the ring E has an inwardly-projecting circular flange e, and a similar flange e is made to project inwardly from about the center of the height of said ring. This ring E is made to surround the spindle-piece at a point about the center of the height of the latter, the lugs c of the gripper-carriers fitting between the flanges e and e of said ring, while the prongs (Z of the coupling D extend do\\"nwardly between the edges of the prong e of the ring E.

F represents a grip-ring having its upper half internally screw-threaded and having its lower end thickened to form a shoulder f on its outer side at about the middle of its height and a truncated cone inner surface. That portion of the outer surface of the ring 1* adjoining and above the shoulder f is provided with screw-threads f. The upper portion of the grip-ring F is made to surround the ring E, the internal threads of said ring F engaging with the external threads of the ring E.

G G represent the lower grippers, which are of the form shown and described in our former patent, No. 346,130, said grippers being suspended from the gripper-carriers and mostly inclosed within the grip-ring as dcscribed in said patent.

The throat-pieces g herein shown are substantially of the same form shown in said former patents, except that the central groove of those of our present invention is shaped to accommodate the form of the slug-wire used and are fitted to the spindle piece as they are fitted to the spindle-extension in the patent referred to.

The nose-plate II (shown in Figs. 1 and 2 of the drawings) is of the same form as that shown and described in said former patent, with the exception that two small holes are made therein-one on each side of the center of the socket-into which are adapted to be inserted the pins 1) Z) of the spindle-piece I represents a ring without tappets, which in our present invention we substitute for the tappet-ring of said former patent, said ringI having its inner surface near its lower end screw-threaded, as shown, and having an exterior shoulder h. This ring I is made to surround the upper portion of the attachment, and has its internal screw-threads engaging with the external threads of the gripring. The upper end of the grip-ring I is connected with the driving-slide or workinghead (lettered 1) in Patent No. 325,274) of the machine in the manner shown and described in said former patents. The wire v',designed to be used for slugging, is preferably flat, and after passing through the spindle above is also made to pass through the center of the spindle-piece A between the upper and lower grippers and rest in the grooves of the throatpieces. The insertion of the wire between the upper grippers will cause the latter to spread apart a small distance, the springs I) operating to hold the tooth-surfaces of said grippers against the wire.

The head of the coupling-piece D is connected with the spindle of the machine in the manner described in Patent No. 346,130. Through this connection rotary motion is imparted to the coupling-piece, and by reason of the engaging-prongs of the coupling and thread-ring a similar motion is communicated to the latter. The backward and forward motion of the thread-ring thus imparted from the spindle will cause the said thread-ring to rise and fall by the engagement of its screwthreads with those of the grip-ring. This upward and downward motion is communicated to the gripper-carriers and gripper by reason of the engagement of the projection c of the former with the internal flanges of the threadring. This lowering of the grippers against the conical surface of the grip-ring and raising them therefrom will cause the grippers to be forced inward to grip the wire and release the wire from said grip, respectively. In this action the spindle-piece is prevented from rotating by the engagement of the pin 1) with the pin-holes of the nose'plate above mentioned. The operation of driving the wire when thus gripped and of cutting it is the same as that described in said patents referred to, the wire not being rotated in the leather.

It will be seen by the construction and operation of the attachment above described that the end of a wire will be driven into the heel the desired depth and then cut off flush with the outer surface of the leather to form a nail It. By repeating the above-described nail-insertion, in combination with the feed motion of the machine by which the work is fed along, one or more rows of nails ct may be formed about the edge of the heel, thus producing the result shown in Fig. 19 of the drawings.

It will be seen that in a slug-heel produced as above described the nails will be of uniform cross-section from their heads to their point-bevels, and be of such form as to be far less likely to loosen and drop out than is the case with the ordinary tapered nails used in hand-slugging, and also that the nails will be set much truer in rows as to position of nails and spacing, thus securing a much finer result of an ornamented boot-heel than is secured by hand-Work.

Having now fully described our invention, what We claim, and desire to secure by Letters Patent, is

The combination, With the spindle-piece A, constructed as described and having internally-located spring-actuated grippers B, of the gripper-carriers C, thread-ring E, having prongs e, pronged coupling D, adapted to be made to interlock with the prongs of said thread-ring, the grippers G, grip-ring F, and ring I, arranged, connected, and adapted to be operated substantially as described.

STILLMAN W. ROBINSON. SEEN P. WVATT. In presence of O. C. SHEPHERD, C. W. ALLISON. 

